Samsung Electronics Co., Ltd.

Sk Planet Co., Ltd.

Neosapience, Inc.

Young Gun Lee

Jung Hoon Park

Jung Soo Kim

Byung-hee Sohn

Sang Cheol Park

Yong Soo Kang

Joong Kyung Park

In Seong Hwang

Hoo Jong Kim

Won Ho Shin

Jun Yong Jung

Hyoung Gil Choi

Jin Choul Lee

Tae Hyung Kwon

Tae Su Kim

A head-mounted display (HMD) apparatus includes a main body having a first surface facing a user's facial side, at least one connecting part connected to at least one surface of the main body, and a wearing part having a strap form, the wearing part being connected to the at least one connecting part and surrounding a portion of a head of the user such that the main body is held on the user's facial side. The main body includes a first support part extending from a portion of the first surface. The wearing part includes a second support part formed on an inner circumferential surface of a front portion of the wearing part facing a forehead of the user. The first support part and the second support part are supported on the user's forehead, thereby minimizing pressure exerted on zygomatic regions and relieving pressure and weight felt by the user.

Head-mounted display apparatus

Disclosed herein is a method for modifying the surface of a counter electrode. According to the method, the surface modification is achieved by treating the surface of a counter electrode with a polyethylene glycol derivative having a pendant group at one end. Also disclosed is a counter electrode whose surface is modified by the method. The electron transfer rate at the interface between the counter electrode and an electrolyte layer of a photovoltaic device is increased and the affinity of the counter electrode for the electrolyte layer is improved, resulting in an improvement in the power conversion efficiency of the photovoltaic device.

Method for modifying surface of counter electrode and surface-modified counter electrode

Growing community of inventors

Seoul, South Korea

Young Gun Lee